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This paper describes experimental results aiming at analyzing lithiumion batteries performances with aging, for different state of charge and temperatures. The results are provided from electrochemical impedance spectroscopy (EIS) measurements on new and aged cells. A climatic test chamber is used during experiments to simulate the conditions of the temperature. Experimental data are plotted over...
This paper describes experimental results aiming at analyzing lithium-ion batteries performances with aging, for different state of charge and temperatures. The results are provided from electrochemical impedance spectroscopy (EIS) measurements on new and aged cells. A climatic test chamber is used during experiments to simulate the conditions of the temperature. Experimental data are plotted over...
Present a method with the chaotic oscillator to detect the battery internal impedance. Chaotic oscillator is sensitive to certain signal and immune to noise, so based on chaotic detection principle, and association the theory of AC internal impedance detection method, a new battery internal impedance detection method is presented. The on-line detection the battery internal impedance will be achieved...
Impedance has been discussed for a long time as an indicator for the state of health (SOH) of lead-acid batteries for standby applications such as UPS systems. The research contains the analysis of the relation between capacity and impedance measurement at different frequencies. Several batteries of different manufacturers and capacity were aged systematically and the impedance measurements were done...
Impedance measurement is a method by which the condition of a battery may be assessed. The realization of on-line monitoring of internal resistance of single cell is important to improve the safe operation of the battery backup system. At present there are many internal resistance measuring methods, such as the density method, the terminal voltage method, the momentary load test method, etc. After...
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